Improvement in friction-clutches



Ilanni effin,

THOMAS OOL'DVWELL, OF NWBURG, NEW YORK.

Letters Patent No. 109,299, dated November 15, 1870.

IMPROVEMENT IN FRICTlON-CLUTCHES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whomy tt may concern:

Be it known that I, THOMAS OoLnwnnL, of the city of Newburg, in the county of Orange and State of New York, have invented anew and usefullmprovcment in Friction-Clutch; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making apart of this specification.

Figure 1 represents a longitudinal elevation.

Figure 2, a transverse section.

Like letters of reference designate like parts in each of the figures.

The nature of my invention consists- First, in the construction of the eccentric ilange.`

Second, in the chilling of the periphery of the ratchet-hub.

Referring to the drawing Arepresents a shaft;

B, the ratchet-hub, fit-ting loosely therein 5 C, `the sleeve or flange, which forms a part ofthe' wheel or roller, from which the motive-power is derived;

D D, cccentrics on the inner circle of the sleeve or flanges;

E E E, chilled depressions formed in the periphery ofthe hub; and

F* F2 F3, the balls tting therein.

I represents a broken section of the wheel or pulley to be driven, the hub B forming a part thereof', and also forms a flange that overlaps the angc C, to prevent the balls from'falling out when they are thrown back in depressions H, as shown in iig. 1.

The depressions H H H ale made for the purpose of admitting the balls to their proper places.'

The opera-tion of my improvement is as' follows:

The flange C being revolved in the direction indicated by the; arrow, one or more of the balls will, by their gravity, fall and wedge in the converging channels between the eccentric chilled grooves lil E E, on the periphery ofthe ratchet-hub B, and the ecoentrics D D on flange or sleeve O; thus the eccentrics form a wedge on eac-h side of the balls, and prevents the possibility of their slipping; thus the hub B is securely clutched to the ange O, and carried forward with it, while an opposite movementof the ange O will release the balls and permit it to freely revolve.

The concave grooves in the periphery ofthe hub B are chilled or hardened, to prevent the balls making a depression therein, and hence makingl them more du rable.

The sleeve O, being eccentric, brings the balls in different positions on the periphery of the ratchet-hub B, as shown in iig. 1, which makes it more durable, and avoids the balls wearing in one place on the ratchet` hub, as is the ease when a concentric sleeve is used.

Naim.

That I claim as my invention, and desire to secure by Let-ters Patent, is-

The eccentric sleeve C, in combination with the chilled surface of hub B and balls F1, F2, and F, for the purpose as herein set forth and described.

"Witnesses: THOMAS GOLDWELL.

JN0. O. Non, ALBERT Non. 

